Suppose You Have $10,000 in Cash and You Decide to Borrow

Suppose you have $10,000 in cash and you decide to borrow another $10,000 at a(n) 6% interest rate to invest in the stock market. You invest the entire $20,000 in an exchange-traded fund (ETF) with a 11% expected return and a 20% volatility. The expected return on your of your investment is closest to ________.

A) 7%
B) 8%
C) 4%
D) 9.1%